TAKHIROV, Zh. O.; TURAEV, R. N. Problem with nonlocal condition on the free boundary. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 64, n. 1, p. 71–80, 2012. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2556. Acesso em: 5 dec. 2025.